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57103-14-7

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57103-14-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57103-14-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,1,0 and 3 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 57103-14:
(7*5)+(6*7)+(5*1)+(4*0)+(3*3)+(2*1)+(1*4)=97
97 % 10 = 7
So 57103-14-7 is a valid CAS Registry Number.

57103-14-7Relevant articles and documents

Method for synthesizing carbazole derivative

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Paragraph 0013; 0034-0035, (2021/10/05)

The invention aims to provide a method for synthesizing a carbazole derivative. The method is characterized in that palladium chloride is used as a catalyst, 2, 2' - dibromobiphenyl is used as an electrophilic reagent, primary amine is taken as a nucleophile, and the carbazole derivative is directly cross-coupled under the conditions of toluene as a solvent and an air atmosphere. The method has the advantages of high yield, high selectivity, simplicity and convenience in operation and the like.

Palladium-catalyzed C-H bond activation for the assembly of: N -aryl carbazoles with aromatic amines as nitrogen sources

Liu, Xiaobing,Sheng, Heyun,Zhou, Yao,Song, Qiuling

supporting information, p. 1665 - 1668 (2020/02/18)

A convenient and efficient palladium-catalyzed C-H bond activation for the assembly of N-aryl carbazole is reported, in which two C-N bonds were formed under one set of conditions. The desired carbazoles were achieved in decent yields with a wide substrate scope by utilizing readily available 2-iodo biphenyls and aromatic amines as starting materials.

Rh(III)-Catalyzed C-H Activation of Boronic Acid with Aryl Azide

Xu, Shiyang,Huang, Baoliang,Qiao, Guanyu,Huang, Ziyue,Zhang, Zhen,Li, Zongyang,Wang, Peng,Zhang, Zhenhua

, p. 5578 - 5582 (2018/09/25)

A Rh(III)-catalyzed C-H activation of boronic acid with aryl azide to obtain unsymmetric carbazoles, 1H-indoles, or indolines has been developed. The reaction constructs dual distinct C-N bonds via sp2/sp3 C-H activation and rhodium nitrene insertion. Synthetically, this approach represents an access to widely used carbazole derivatives. The practical application to CBP and unsymmetric TCTA derivatives has also been performed. Mechanistic experiments and DFT calculations demonstrate that a five-membered rhodacycle species is the key intermediate.

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